An original meter

Keywords: meter, standards, metrology In my post Metrology is not about the weather. Part I – How to weigh a potato, I mentioned that international standards used to be based on physical artifacts. I just came across this short article, The Last Original Standard Metre by Atlas Obscura. The cover picture is of one ofContinue reading “An original meter”

Metrology is not about the weather. Part I – How to weigh a potato

Keywords: philosophy of science, measurement, ISO, NIST, standards, accuracy, precision, philosophical foundations When someone buys a pound of potatoes, how do they know it weighs one pound? A likely answer is that the produce scale said it was. But that assumes the scale is accurate. Is it? And how do we know? The answer toContinue reading “Metrology is not about the weather. Part I – How to weigh a potato”